/**
 * Copyright (c) 2018 苍穹跃龙
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.l.core.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;

import com.l.core.util.WebUtils;
import com.l.web.master.system.entity.SysUser;

/**
 * 登录过滤器
 * 
 * @author 严秋旺
 * @date 2018-10-02
 */
@WebFilter(filterName = "authFilter", urlPatterns = "/master/*")
public class AuthFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletResponse res = (HttpServletResponse) response;
        SysUser login = WebUtils.getLogin();

        if (login == null) {
            res.setStatus(401);
            RequestDispatcher requestDispatcher = request.getRequestDispatcher("/login");
            requestDispatcher.forward(request, response);
            return;
        }

        chain.doFilter(request, response);
    }

    @Override
    public void destroy() {

    }

}
